I have a Kohler shower. I think the model is K-T14420.

The other day a plumber came to replace the valve that was clogged up. He also removed the screen to increase the flow. However I want to put the screen back, as the pressure is now to high. I don't know how to do this.

I removed the head and placed the screen in the pipe coming out from the wall. The head would not fit back into the pipe.